<?php  
function img_up($fieldname,$destination,$image_file,$width,$height,$watermark){
		// some settings
		$max_upload_width = 2592;
		$max_upload_height = 1944;
		  
		// if user chosed properly then scale down the image according to user preferances
		if($width<=$max_upload_width){
			$max_upload_width = $width;
		}    
		if($height<=$max_upload_height){
			$max_upload_height = $height;
		}	

		// if uploaded image was JPG/JPEG
		if($_FILES[$fieldname]["type"] == "image/jpg" || $_FILES[$fieldname]["type"] == "image/jpeg" || $_FILES[$fieldname]["type"] == "image/pjpeg"){	
			$image_source = imagecreatefromjpeg($_FILES[$fieldname]["tmp_name"]);
		}		
		// if uploaded image was GIF
		if($_FILES[$fieldname]["type"] == "image/gif"){	
			$image_source = imagecreatefromgif($_FILES[$fieldname]["tmp_name"]);
		}				
		// if uploaded image was PNG
		if($_FILES[$fieldname]["type"] == "image/png"){
			$image_source = imagecreatefrompng($_FILES[$fieldname]["tmp_name"]);
		}
		
		// watermark
		list($wm_width, $wm_height) = getimagesize($_FILES[$fieldname]["tmp_name"]);
		if($wm_width<$max_upload_width || $wm_height<$max_upload_height){
			if($watermark==TRUE){
				$watermark_image = imagecreatefrompng('img/watermark.png');
				imagecopy($image_source, $watermark_image, $wm_width-130, $wm_height-30, 0, 0, imagesx($watermark_image),imagesy($watermark_image));
			}
		}
		
		$remote_file = $destination.$image_file;
		imagejpeg($image_source,$remote_file,100);
		chmod($remote_file,0644);
	
		// get width and height of original image
		list($image_width, $image_height) = getimagesize($remote_file);
	
		if($image_width>$max_upload_width || $image_height >$max_upload_height){
			$proportions = $image_width/$image_height;
			
			/// FIXED DIMENSIONS //
			$new_width = 300;
			$new_height = 150;		
			
			$new_image = imagecreatetruecolor($new_width , $new_height);
			$image_source = imagecreatefromjpeg($remote_file);
			
			imagecopyresampled($new_image, $image_source, 0, 0, 0, 0, $new_width, $new_height, $image_width, $image_height);
			// watermark
			if($watermark==TRUE){
				$watermark_image = imagecreatefrompng('img/watermark.png');
				imagecopy($new_image, $watermark_image, $new_width-130, $new_height-30, 0, 0, imagesx($watermark_image),imagesy($watermark_image));
			}
			imagejpeg($new_image,$remote_file,100);
			
			imagedestroy($new_image);
		}
		
		imagedestroy($image_source);
}
?>